src/playlist/loadsave.c

   1 /*****************************************************************************
   2  * loadsave.c : Playlist loading / saving functions
   3  *****************************************************************************
   4  * Copyright (C) 1999-2004 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Samuel Hocevar <sam@zoy.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23 #ifdef HAVE_CONFIG_H
  24 # include "config.h"
  25 #endif
  26
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29 #include <unistd.h>
  30
  31 #include <vlc_common.h>
  32 #include <vlc_playlist.h>
  33 #include <vlc_events.h>
  34 #include "playlist_internal.h"
  35 #include "config/configuration.h"
  36 #include <vlc_fs.h>
  37 #include <vlc_url.h>
  38 #include <vlc_modules.h>
  39
  40 int playlist_Export( playlist_t * p_playlist, const char *psz_filename,
  41                      playlist_item_t *p_export_root, const char *psz_type )
  42 {
  43     if( p_export_root == NULL ) return VLC_EGENERIC;
  44
  45     playlist_export_t *p_export =
  46         vlc_custom_create( p_playlist, sizeof( *p_export ), "playlist export" );
  47     if( !p_export )
  48         return VLC_ENOMEM;
  49
  50     msg_Dbg( p_export, "saving %s to file %s",
  51              p_export_root->p_input->psz_name, psz_filename );
  52
  53     int ret = VLC_EGENERIC;
  54
  55     /* Prepare the playlist_export_t structure */
  56     p_export->p_root = p_export_root;
  57     p_export->psz_filename = psz_filename;
  58     p_export->p_file = vlc_fopen( psz_filename, "wt" );
  59     if( p_export->p_file == NULL )
  60         msg_Err( p_export, "could not create playlist file %s (%m)",
  61                  psz_filename );
  62     else
  63     {
  64         module_t *p_module;
  65
  66         /* And call the module ! All work is done now */
  67         playlist_Lock( p_playlist );
  68         p_module = module_need( p_export, "playlist export", psz_type, true );
  69         playlist_Unlock( p_playlist );
  70
  71         if( p_module == NULL )
  72             msg_Err( p_playlist, "could not export playlist" );
  73         else
  74         {
  75             module_unneed( p_export, p_module );
  76             ret = VLC_SUCCESS;
  77         }
  78         fclose( p_export->p_file );
  79    }
  80    vlc_object_release( p_export );
  81    return ret;
  82 }
  83
  84 int playlist_Import( playlist_t *p_playlist, const char *psz_file )
  85 {
  86     input_item_t *p_input;
  87     const char *const psz_option = "meta-file";
  88     char *psz_uri = vlc_path2uri( psz_file, NULL );
  89
  90     if( psz_uri == NULL )
  91         return VLC_EGENERIC;
  92
  93     p_input = input_item_NewExt( psz_uri, psz_file,
  94                                  1, &psz_option, VLC_INPUT_OPTION_TRUSTED, -1 );
  95     free( psz_uri );
  96
  97     playlist_AddInput( p_playlist, p_input, PLAYLIST_APPEND, PLAYLIST_END,
  98                        true, false );
  99     return input_Read( p_playlist, p_input );
 100 }
 101
 102 /*****************************************************************************
 103  * A subitem has been added to the Media Library (Event Callback)
 104  *****************************************************************************/
 105 static void input_item_subitem_tree_added( const vlc_event_t * p_event,
 106                                       void * user_data )
 107 {
 108     playlist_t *p_playlist = user_data;
 109     input_item_node_t *p_root =
 110         p_event->u.input_item_subitem_tree_added.p_root;
 111
 112     PL_LOCK;
 113     playlist_InsertInputItemTree ( p_playlist, p_playlist->p_media_library,
 114                                    p_root, 0, false );
 115     PL_UNLOCK;
 116 }
 117
 118 int playlist_MLLoad( playlist_t *p_playlist )
 119 {
 120     input_item_t *p_input;
 121
 122     char *psz_datadir = config_GetUserDir( VLC_DATA_DIR );
 123     if( !psz_datadir ) /* XXX: This should never happen */
 124     {
 125         msg_Err( p_playlist, "no data directory, cannot load media library") ;
 126         return VLC_EGENERIC;
 127     }
 128
 129     char *psz_file;
 130     if( asprintf( &psz_file, "%s" DIR_SEP "ml.xspf", psz_datadir ) == -1 )
 131         psz_file = NULL;
 132     free( psz_datadir );
 133     if( psz_file == NULL )
 134         return VLC_ENOMEM;
 135
 136     /* lousy check for media library file */
 137     struct stat st;
 138     if( vlc_stat( psz_file, &st ) )
 139     {
 140         free( psz_file );
 141         return VLC_EGENERIC;
 142     }
 143
 144     char *psz_uri = vlc_path2uri( psz_file, "file/xspf-open" );
 145     free( psz_file );
 146     if( psz_uri == NULL )
 147         return VLC_ENOMEM;
 148
 149     const char *const options[1] = { "meta-file", };
 150     /* that option has to be cleaned in input_item_subitem_tree_added() */
 151     /* vlc_gc_decref() in the same function */
 152     p_input = input_item_NewExt( psz_uri, _("Media Library"),
 153                                  1, options, VLC_INPUT_OPTION_TRUSTED, -1 );
 154     free( psz_uri );
 155     if( p_input == NULL )
 156         return VLC_EGENERIC;
 157
 158     PL_LOCK;
 159     if( p_playlist->p_media_library->p_input )
 160         vlc_gc_decref( p_playlist->p_media_library->p_input );
 161
 162     p_playlist->p_media_library->p_input = p_input;
 163
 164     vlc_event_attach( &p_input->event_manager, vlc_InputItemSubItemTreeAdded,
 165                         input_item_subitem_tree_added, p_playlist );
 166
 167     pl_priv(p_playlist)->b_doing_ml = true;
 168     PL_UNLOCK;
 169
 170     input_Read( p_playlist, p_input );
 171
 172     PL_LOCK;
 173     pl_priv(p_playlist)->b_doing_ml = false;
 174     PL_UNLOCK;
 175
 176     vlc_event_detach( &p_input->event_manager, vlc_InputItemSubItemTreeAdded,
 177                         input_item_subitem_tree_added, p_playlist );
 178
 179     return VLC_SUCCESS;
 180 }
 181
 182 int playlist_MLDump( playlist_t *p_playlist )
 183 {
 184     char *psz_datadir;
 185
 186     psz_datadir = config_GetUserDir( VLC_DATA_DIR );
 187
 188     if( !psz_datadir ) /* XXX: This should never happen */
 189     {
 190         msg_Err( p_playlist, "no data directory, cannot save media library") ;
 191         return VLC_EGENERIC;
 192     }
 193
 194     char psz_dirname[ strlen( psz_datadir ) + sizeof( DIR_SEP "ml.xspf")];
 195     strcpy( psz_dirname, psz_datadir );
 196     free( psz_datadir );
 197     if( config_CreateDir( (vlc_object_t *)p_playlist, psz_dirname ) )
 198     {
 199         return VLC_EGENERIC;
 200     }
 201
 202     strcat( psz_dirname, DIR_SEP "ml.xspf" );
 203
 204     playlist_Export( p_playlist, psz_dirname, p_playlist->p_media_library,
 205                      "export-xspf" );
 206
 207     return VLC_SUCCESS;
 208 }